THERMAL RESPONSE SWITCH
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United States of America Patent
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app pub date -
Dec 24, 2014
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Dec 24, 2014
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Abstract
A thermally responsive switch includes a heating element with a meandering portion formed of a metal plate. The meandering portion is bent twice with respect to reference axes extending in a longitudinal direction of a housing. The meandering portion includes an outer vertical portion that is perpendicular to an inner surface of a lid plate, an inner vertical portion that is perpendicular to the inner surface of the lid plate, and a middle vertical portion that is disposed between the outer vertical portion and the inner vertical portion and is perpendicular to the inner surface of the lid plate. The middle vertical portion has a narrow portion narrower than a width of the middle vertical portion. The narrow portion is provided on an end portion located in one side of the middle vertical portion where no other heating element exists among the two widthwise end portions of the middle vertical portion.
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